Question:
In the following circuit, the value of Y is:
In the following circuit, the value of Y is:
Show Hint
When analyzing logic circuits, identify the gates and work from the input terminals forward to the output terminal, documenting the truth table values at each node.
Updated On: Jun 9, 2026
- \( 0 \)
- \( 1 \)
- Varies between 0 and 1
- \( 1/2 \)
Show Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Concept:
This circuit is a digital logic network using NAND gates. A NAND gate outputs a 0 only when both inputs are 1; otherwise, it outputs a 1. We must trace the signal through each logic gate to determine the final output state Y.
Step 1: Trace input signals to the gates.
Input A: constant '1'. Input B: constant '0'. The '0' input passes through a NOT gate (inverter), converting it to '1'. This signal is then fed as an input to the other NAND gates.
Step 2: Analyze the gate logic.
- The lower gate is a NAND gate with inputs from the inverted '0' (which is '1') and the feedback. - Through Boolean simplification and tracing the static logic levels in this specific feedback configuration: - For the bottom NAND gate, the inputs result in an output of '0'. - For the middle NAND gate, with the inputs arriving, the output Y resolves to '1'.
Step 3: Conclusion on Y.
The combination of the feedback loop and the gate configuration results in a stable output of Y = 1. $$\boxed{1}$$
Step 1: Trace input signals to the gates.
Input A: constant '1'. Input B: constant '0'. The '0' input passes through a NOT gate (inverter), converting it to '1'. This signal is then fed as an input to the other NAND gates.
Step 2: Analyze the gate logic.
- The lower gate is a NAND gate with inputs from the inverted '0' (which is '1') and the feedback. - Through Boolean simplification and tracing the static logic levels in this specific feedback configuration: - For the bottom NAND gate, the inputs result in an output of '0'. - For the middle NAND gate, with the inputs arriving, the output Y resolves to '1'.
Step 3: Conclusion on Y.
The combination of the feedback loop and the gate configuration results in a stable output of Y = 1. $$\boxed{1}$$
Was this answer helpful?
0
0
Top AP EAPCET Physics Questions
- A body is projected from the ground at an angle of $\tan^{-1} \left( \frac{8}{7}\right)$ with the horizontal. The ratio of the maximum height attained by it to its range is
- A lens forms real and virtual images of an object, when the object is at $u_{1}$ and $u_{2}$ distances respectively. If the size of the virtual image is double that of the real image, then the focal length of the lens is (take, the magnification of the real image as $m$ )
- Two spheres $P$ and $Q$, each of mass $200\, g$ are attached to a string of length one metre as shown in the figure. The string and the spheres are then whirled in a horizontal circle about $O$ at a constant angular speed. The ratio of the tension in the string between $P$ and $Q$ to that of between $P$ and $O$ is $(P$ is at mid-point of the line joining $O$ and $Q$ )
- The radii of the two columns in a U - tube are r1 and r2. When a liquid of density p (angle of contact is $ 0{}^\circ $ ) is filled in it, the level difference of the liquid in the two arms is h. The surface tension of the liquid is: (g = acceleration due to gravity)
- A rigid metallic sphere is spinning around its own axis in the absence of external torque. If the temperature is raised, its volume increases by $9 \%$. The change in its angular speed is
View More Questions
Top AP EAPCET Digital Electronics and Logic Gates Questions
- Output of the following logic circuit is:
- A light from Paschen series of hydrogen atom is able to eject photoelectrons from a metal. Then the work function of the metal is
- In semiconductors, which of the following are true:
Two diodes with zero resistance in forward bias and infinite resistance in reverse bias are connected to a battery as shown in the circuit. Then the value of current \(i\) is:
- The circuit consisting of NAND gates that is equivalent to an AND gate is:
View More Questions
Top AP EAPCET Questions
- A body is projected from the ground at an angle of $\tan^{-1} \left( \frac{8}{7}\right)$ with the horizontal. The ratio of the maximum height attained by it to its range is
- The four quantum numbers of the valence electron of potassium are :
- A lens forms real and virtual images of an object, when the object is at $u_{1}$ and $u_{2}$ distances respectively. If the size of the virtual image is double that of the real image, then the focal length of the lens is (take, the magnification of the real image as $m$ )
- Two spheres $P$ and $Q$, each of mass $200\, g$ are attached to a string of length one metre as shown in the figure. The string and the spheres are then whirled in a horizontal circle about $O$ at a constant angular speed. The ratio of the tension in the string between $P$ and $Q$ to that of between $P$ and $O$ is $(P$ is at mid-point of the line joining $O$ and $Q$ )
- The volume of $0.02\, M$ acidified permanganate solution required for complete reaction of $60\, mL$ of $0.01\, MI^{-}$ ion solution to form $I_2$ in $mL$ is
View More Questions